xref: /openbmc/openbmc/meta-facebook/meta-catalina/recipes-catalina/plat-svc/files/standby-power-enable (revision 4ce60f98)

#!/bin/bash
# shellcheck source=meta-facebook/recipes-fb/obmc_functions/files/fb-common-functions
source /usr/libexec/fb-common-functions

GPIO_HIGH=1
GPIO_LOW=0

wait_gpio_value()
{
    local net_name=$1
    local max_retries=$3
    local delay_secs=$4
    local expd_val=$2

    local gpio_val=0
    local trycnt=1

    until [[ $gpio_val -gt 0 || $trycnt -gt $max_retries ]]
    do
        gpio_val=$(get_gpio "$net_name")
        rc=$?
        if [[ $rc -ne 0 ]]; then
            err_msg="Unable to read $net_name"
            echo "$err_msg"
            return 1
        fi
        if [[ $gpio_val -eq $expd_val ]]; then
            return 0
        fi
        sleep "$delay_secs"
        ((trycnt++))
    done

    err_msg="wait_gpio_value failed, gpio_val=$gpio_val,  exp_val=$expd_val"
    echo "$err_msg"
    return 1
}

bind_i2c_muxes()
{
    # Module 0 I2C Mux
    # i2c24 - i2c27
    echo "0-0071" > /sys/bus/i2c/drivers/pca954x/bind
    # i2c28 - i2c31
    echo "0-0072" > /sys/bus/i2c/drivers/pca954x/bind
    # i2c32 - i2c35
    echo "0-0073" > /sys/bus/i2c/drivers/pca954x/bind

    # Module 1 I2C Mux
    # i2c36 - i2c39
    echo "0-0075" > /sys/bus/i2c/drivers/pca954x/bind
    # i2c40 - i2c43
    echo "0-0076" > /sys/bus/i2c/drivers/pca954x/bind
    # i2c44 - i2c47
    echo "0-0077" > /sys/bus/i2c/drivers/pca954x/bind

    # HDD Board I2C Mux, i2c48 - i2c55
    echo "30-0070" > /sys/bus/i2c/drivers/pca954x/bind
}

bind_gpio_expanders()
{
    # Module 0 IOEXP
    echo "2-0020" > /sys/bus/i2c/drivers/pca953x/bind
    # Module 1 IOEXP
    echo "2-0021" > /sys/bus/i2c/drivers/pca953x/bind
    # HMC IOEXP
    echo "2-0027" > /sys/bus/i2c/drivers/pca953x/bind
    # BMC IOEXP
    echo "6-0021" > /sys/bus/i2c/drivers/pca953x/bind
    # IO Mezz 0 IOEXP
    echo "29-0020" > /sys/bus/i2c/drivers/pca953x/bind
    # IO Mezz 1 IOEXP
    echo "41-0021" > /sys/bus/i2c/drivers/pca953x/bind
}

bind_fru_eeproms()
{
    # Module 0 FRU
    echo "13-0050" /sys/bus/i2c/drivers/at24/bind
    # Module 1 FRU
    echo "12-0050" /sys/bus/i2c/drivers/at24/bind
    # HMC FRU
    echo "13-0057" /sys/bus/i2c/drivers/at24/bind
    # Left CBC FRU
    echo "13-0054" /sys/bus/i2c/drivers/at24/bind
    # Right CBC FRU
    echo "13-0055" /sys/bus/i2c/drivers/at24/bind
    # IO Mezz 0 FRU
    echo "29-0050" /sys/bus/i2c/drivers/at24/bind
    # IO Mezz 1 FRU
    echo "41-0050" /sys/bus/i2c/drivers/at24/bind
    # HDD Board FRU
    echo "54-0052" /sys/bus/i2c/drivers/at24/bind
}

reset_host_usb()
{
    set_gpio "USB_HUB_RESET_L" "$GPIO_LOW"
    sleep 1
    set_gpio "USB_HUB_RESET_L" "$GPIO_HIGH"
}

rebind_hmc_usb_network()
{
    echo 1e6a1000.usb > /sys/bus/platform/drivers/ehci-platform/unbind
    echo 1e6a1000.usb > /sys/bus/platform/drivers/ehci-platform/bind
}

is_stby_good()
{
    local gpio_val

    if ! gpio_val=$(get_gpio "STBY_POWER_PG_3V3"); then
        return 1
    fi

    if [[ $gpio_val -eq 0 ]]; then
        return 1
    fi

    return 0
}

set_bmc_ready()
{
    local bmc_ready="/sys/class/leds/bmc_ready_noled/brightness"
    local bmc_ready_cpld="/sys/class/leds/bmc_ready_cpld_noled/brightness"

    echo 1 > ${bmc_ready}
    echo 1 > ${bmc_ready_cpld}
    return 0
}

if ! is_stby_good; then
    set_gpio "SCM_HPM_STBY_RST_N" "$GPIO_LOW"
fi

set_gpio "SCM_HPM_STBY_EN" "$GPIO_HIGH"
set_gpio "stby_power_en_cpld" "$GPIO_HIGH"
if ! wait_gpio_value "STBY_POWER_PG_3V3" "$GPIO_HIGH" 20 1; then
    echo "Error: failed to get STBY_POWER_PG_3V3 as high (1) in 20 sec"
    exit 1
fi
set_gpio "stby_power_gd_cpld" "$GPIO_HIGH"

bind_i2c_muxes
bind_gpio_expanders

set_gpio "BMC_12V_CTRL" "$GPIO_HIGH"
reset_host_usb

set_gpio "HMC_PGOOD" "$GPIO_HIGH"
set_gpio "EROT_FPGA_RST_L" "$GPIO_HIGH"
set_gpio "SEC_EROT_FPGA_RST_L" "$GPIO_HIGH"
set_gpio "HMC_EROT_RST_L" "$GPIO_HIGH"
set_gpio "SCM_HPM_STBY_RST_N" "$GPIO_HIGH"

if ! wait_gpio_value "HMC_READY" "$GPIO_HIGH" 180 1; then
    echo "Error: failed to get HMC_READY as high (1) in 180 sec"
    exit 1
fi

rebind_hmc_usb_network

if ! wait_gpio_value "FPGA_READY_BMC" "$GPIO_HIGH" 180 1; then
    echo "Error: failed to get FPGA_READY_BMC as high (1) in 180 sec"
    exit 1
fi

bind_fru_eeproms
set_bmc_ready

exit 0